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4710403 
Journal Article 
Sealing slurries limiting natural gas exhalations from the annular space of a wellbore 
Ziaja, Jan; Stryczek, S; Jamrozik, A; Knez, D; Czarnota, R; Vytyaz, O 
2017 
1 
Przemysł Chemiczny
ISSN: 0033-2496 
WYDAWNICTWO SIGMA-N O T SP Z O O 
WARSAW 
96 
5 
990-992 
Polish 
WOS:000405757600011 
Cement slurries were modified by addn. of a dispersing agent (Ca silicate) 6-8% and a butadiene-styrene-amide latex (15-20%) to decrease the permeability of the sealing. The optimum contents of the agent and latex were 6% and 20% by mass, resp.